13.10.5 Prospective student-Athlete’s visit. A member institution shall not publicize (or arrange for publicity of) a prospective student-athlete’s visit to the institution’s campus. Further, a prospective student-athlete may not participate in team activities that would make the public or media aware of the prospective student-athlete’s visit to the institution (e.g., running out of the tunnel with team, celebratory walks to or around the stadium/arena, on-field pregame celebrations). Violations of this bylaw do not affect a prospective student-athlete’s eligibility and are considered institutional violations per Constitution 2.8.1.
there have been cases under this NCAA article where schools have had to report secondary recruiting violations because of student section chants, signs, and other things while a recruit was on an official visit.